Spirex to Supply Glycon Non-Return Valve

Glycon Corp., Tecumseh, Mich., has agreed to allow Spirex Corp., Youngstown, Ohio, to make and sell the Glycon QSO (quick-shutoff) non-return valve. Glycon will also continue to sell the valve. First introduced in 1992, the QSO valve is said to provide free material flow with low shear plus fast, clean shutoff. When injection starts, material pressure on the broad face of the self-centering poppet drives it back against the valve seat, shutting off backflow. The poppet moves only a fraction of an inch, so shutoff is very quick for tight part-weight consistency.